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    王 昭, 王雨洁, 张真真, 陈 洁, 潘梦琦, 郭心雨. pHEMA基分子印迹隐形眼镜的制备及其对茶多酚的负载[J]. 功能高分子学报,2024,37(1):57-65. doi: 10.14133/j.cnki.1008-9357.20231214001
    引用本文: 王 昭, 王雨洁, 张真真, 陈 洁, 潘梦琦, 郭心雨. pHEMA基分子印迹隐形眼镜的制备及其对茶多酚的负载[J]. 功能高分子学报,2024,37(1):57-65. doi: 10.14133/j.cnki.1008-9357.20231214001
    WANG Zhao, WANG Yujie, ZHANG Zhenzhen, CHEN Jie, PAN Mengqi, GUO Xinyu. Preparation of pHEMA Molecularly Imprinted Contact Lenses and Their Loading on Tea Polyphenol[J]. Journal of Functional Polymers, 2024, 37(1): 57-65. doi: 10.14133/j.cnki.1008-9357.20231214001
    Citation: WANG Zhao, WANG Yujie, ZHANG Zhenzhen, CHEN Jie, PAN Mengqi, GUO Xinyu. Preparation of pHEMA Molecularly Imprinted Contact Lenses and Their Loading on Tea Polyphenol[J]. Journal of Functional Polymers, 2024, 37(1): 57-65. doi: 10.14133/j.cnki.1008-9357.20231214001

    pHEMA基分子印迹隐形眼镜的制备及其对茶多酚的负载

    Preparation of pHEMA Molecularly Imprinted Contact Lenses and Their Loading on Tea Polyphenol

    • 摘要: 以甲基丙烯酸β-羟乙酯(HEMA)为主要单体,甲基丙烯酸化透明质酸酯(MAHA)、α-甲基丙烯酸(MAA)、丙烯酰胺(AM)或N-乙烯基吡咯烷酮(NVP)分别作为功能性单体,茶多酚表没食子儿茶素没食子酸酯(EGCG)为模板分子,采用模压成型法制备了一系列分子印迹水凝胶隐形眼镜。利用核磁共振氢谱仪(1H-NMR)、扫描电子显微镜(SEM)、傅里叶变换红外光谱仪(FT-IR)、紫外-可见分光光度计(UV-Vis)、接触角仪等对MAHA及隐形眼镜的结构和性能进行了研究。结果表明:引入功能性单体显著提高了分子印迹隐形眼镜的含水量和表面亲水性。采用分子印迹技术能够增加隐形眼镜对EGCG的负载量并降低其释放速率。此外,负载EGCG的隐形眼镜呈现出紫外线防护和自由基清除的特性。

       

      Abstract: Eye diseases have emerged as a prevalent health concern in modern society. Drug-loaded contact lenses, compared to traditional delivery approaches, possess the potential to enhance drug bioavailability and reduce the incidence of adverse reactions. They are expected to become a safe, effective, and convenient therapeutic method for patients. Using methyl methacrylate β-hydroxyethyl methacrylate (HEMA) as the main monomer, methyl methacrylate-modified hyaluronic acid ester (MAHA), α-methyl methacrylate (MAA), acrylamide (AM), or N-vinyl pyrrolidone (NVP) as functional monomers, and tea polyphenol epigallocatechin gallate ester (EGCG) as the template molecule, a sequence of molecularly imprinted hydrogel contact lenses were prepared via the molding method. The composition, surface morphology, water contact angle, equilibrium water content, light transmittance, and loading and delivery of EGCG were systematically characterized by scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FT-IR), ultraviolet-visible spectrophotometry (UV-Vis), and contact angle measurements. Results indicate that the incorporation of functional monomers significantly enhance the water content and surface hydrophilicity of pHEMA contact lenses. Compared to non-molecularly imprinted lenses, the utilization of molecular imprinting technology increase the loading capacity of EGCG in the contact lenses and reduce its release rate. Moreover, UV testing and 1,1-diphenyl-2-picrylhydrazyl (DPPH) clearance experiments substantiate that the EGCG-loaded lenses display ultraviolet protection and free radical scavenging. These molecularly imprinted hydrogel contact lenses have the promising potential and practical applications of such lenses within the field of ophthalmic health and therapeutics.

       

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